From owner-freebsd-questions@FreeBSD.ORG Mon Jun 4 01:07:02 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 73557106566C for ; Mon, 4 Jun 2012 01:07:02 +0000 (UTC) (envelope-from kayasaman@gmail.com) Received: from mail-wi0-f178.google.com (mail-wi0-f178.google.com [209.85.212.178]) by mx1.freebsd.org (Postfix) with ESMTP id B90498FC14 for ; Mon, 4 Jun 2012 01:07:01 +0000 (UTC) Received: by wibhn6 with SMTP id hn6so1910625wib.13 for ; Sun, 03 Jun 2012 18:07:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=LTfvZ2JRruNueqqgKbBBe1jwI2M0m1Yh9Q9pMO9Nb7c=; b=gKzODgBdkSBfI79EDQwVSmuh17dJn0xzCsOuveeucVKVe4Nz3PAlD3zGmkyBJq244q XpcBNk0etpR1GlwJOvFUiO81W+9DAS9dk3QAfWRzN7XY1/zfLyTvMx8jmhNMkn+ugYHO /McYhBTKV/AyPPdU+t+u33Fp1y9wWDQwPsidB/SqwBeONPrMy1eDJO1pdHgkM6MQQtdJ GpNFig5O1szG3M8vEvDSlpeM8FloBH677F+fCLpRGCJTL7qkioZotkTTVFCDshFAHdS9 3SgX3u0sVmIz44YtCvaCvq7WQ0mWd3SUiH3llpwF421Ys88Nihau1UBfholUtIFX6ZOG L+2A== Received: by 10.216.143.146 with SMTP id l18mr9022965wej.56.1338772020691; Sun, 03 Jun 2012 18:07:00 -0700 (PDT) Received: from X220.optiplex-networks.com (81-178-2-118.dsl.pipex.com. [81.178.2.118]) by mx.google.com with ESMTPS id dg2sm26488379wib.4.2012.06.03.18.06.58 (version=SSLv3 cipher=OTHER); Sun, 03 Jun 2012 18:06:59 -0700 (PDT) Message-ID: <4FCC0A31.3000902@gmail.com> Date: Mon, 04 Jun 2012 02:06:57 +0100 From: Kaya Saman User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 MIME-Version: 1.0 To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Strange case of vanishing disk X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 04 Jun 2012 01:07:02 -0000 Hi, this is a very strange issue but I guess will either be related to 2 things, PSU not being powerful enough or disk controller simply being crap. Here's what's going on. I have a little Chenbro 4 disk mini-ITX NAS server with 2x 2TB disks and 2x4TB disks as storage - all spread out over 2 ZFS storage pools. Additionally I am running the root file system on a 40GB SSD. The strange thing with this is that I recently installed the 4TB disks and they're brand new. One disk connected to the system board works fine and shows up as online and on one of the channels using atacontrol list. The other disk is connected to a Startech.com Jmicron based 2x SATA RAID controller card. The disk connected to the controller card is having issues. At first the drive wouldn't be seen by the system then after a while all of a sudden it was there. No reboots, no io scans nothing it just appeared. After blasting it with IO for a few days the disk has now vanished again..... I had this error in dmesg for a while: ad4: TIMEOUT - READ_DMA retrying (1 retry left) LBA=113337535 I have tried to use pciconf -lbvv to show the connected interfaces and the JMICRON comes up fine: atapci0@pci0:2:0:0: class=0x010400 card=0x2366197b chip=0x2366197b rev=0x02 hdr=0x00 vendor = 'JMicron Technology Corp.' device = 'JMicron JMB366 AHCI/IDE Controller (JMB36X)' class = mass storage subclass = RAID bar [10] = type I/O Port, range 32, base 0xd040, size 8, enabled bar [14] = type I/O Port, range 32, base 0xd030, size 4, enabled bar [18] = type I/O Port, range 32, base 0xd020, size 8, enabled bar [1c] = type I/O Port, range 32, base 0xd010, size 4, enabled bar [20] = type I/O Port, range 32, base 0xd000, size 16, enabled bar [24] = type Memory, range 32, base 0xd0510000, size 8192, enabled So why isn't the disk? I reckon as stated at the beginning that either the 180Watt PSU inside the system isn't enough or the controller is just really poor?? Could anyone suggest anything to look into, I'm sure I've covered all the bases but just incase there is something else I can do with this one?? Thanks. Kaya